Ok, plague 0.4.4 and CVS HEAD have the necessary fixes for kmod support. You'll
still have to manually bump the kernel version that the package depends on for
the time being, but when I update the buildsys tomorrow you should be able to
push your package through for any arches you want on FC3, FC4, and devel.

There's no ppc64iseries support yet, and I don't know what that would involve.
I think it's just a matter of adding the correct config magic and things should
just work. But it's not supported right yet.